WordWeb Online

1. Used of conduct; characterized by dishonour
   "They weren't happy when they heard about the debasing currency"
   - degrading

1. Corrupt morally or by intemperance or sensuality
   "Socrates was accused of debasing young men"
   - corrupt, pervert, subvert, demoralize, demoralise [Brit], debauch, profane, vitiate, deprave, misdirect
    
2. Lower in value by increasing the base-metal content
   - alloy
    
3. Corrupt, debase, or make impure by adding a foreign or inferior substance; often by replacing valuable ingredients with inferior ones
   - load, adulterate, stretch, dilute

See also: debasement, debaser, dishonorable [US], dishonourable [Brit, Cdn]

Type of: alter, change, corrupt, devalue, modify, spoil